Filling stop-motion for looms



H. 0. BROWN. FILLING STOP MOTION FOR LOOMS.

' APPLICATION FILED AUG.24, 1920. 1,398,713.

Patented Nov. 29, 1921.

ATTORNEY H. 0. BROWN. FILLING sTo MOTION FOR LOOMS.

APPLICATION FILED AUG-24, 1920. 1,398,713, PatentedNov. 29, 1921.

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H. 0.- BROWN. v FILLING STOP MOTION FOR LOOMS. m rucmopl. men 'ue.24. 1920.

4 SHEETS-SHEET 3.

' INVENTOR ATTORNEY H. 0. BROWN. FILLIING STOP MOTION FOR LOOMSQ I APPLICATION man A0614, 1920. 1,398,71 3 Patented Nov. 29, 1921.

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HARVEY 0. BROWN, OF EASTON, PENNSYLVANIA.

FILLING STOP-FICTION FOR LOOMS.

Specification of Letters Patent. Pat-gnted N 29, 1921 Application filed August 24, 1920. Serial No. 405,606.

ing arrangement as to reduce to a minimum the possibility of its getting out of order, and so locate and arrange the mechanism relative to the frame and other parts of the loom that in case of accident repairs to the stop mechanism can readily be made.

One embodiment of my invention is illustrated in the accompanying drawings and described in detail in the following specification:

Figure 1 is a side elevation of a loom with the stop mechanism applied thereto. Fig. 2 is in part a side elevation and in part a verti cal cross section of the opposing members of the stop mechanism. Fig. 3 is a plan view of the opposing members of the device. Fig. 4c is a side elevation of'the knock-off head with the shield lowered and deflecting the dagger. Fig. 5 is a side elevation of the knock-off head and of the dagger" in pos1- tion to pass under the head and with the shield lifter in initial contact with the eX- terior cam of the head. Figs. 6 and 7 are side elevations of the head, Fig. 6 showing the shield lifter raising the shield and Fig.

7 showing the shield lifted to its full extent. Fig. 8 is a front elevation of the knock-off head with the shield fully raised. I Figs. 9,

10 and 11 are side elevations of the head with the shield fully raised and showing respectively the dagger passing under the head, approaching the head, and striking the crotch.

My invention may be applied to any make of loom. In the loom illustrated in the drawings, A is the frame work, B the warp beam, U the warp threads, DD the harness, la the reed, E the reed cap, F the lay, G the crank arm, H the sword arm pivoted at H, I the breast beam and J a control lever for shifting the clutch and stopping the loom. In the modification of my automatic stop located above the foot will be raised to its full extent, further end of the rod 19 a series of feeler device shown in the drawings, 1 is a tie rod to which is secured by the set screw 2 an arm 3, to the inner end of which is pivoted the thread sockettr" in which is adjustably mounted the raising rod 4, the'upper end of which passes through an opening 5 in the foot 6 of the stand 7 which is secured to the front face of the lay F. This stand may be made of a single casting consisting of the plate 7 carrying near the top at one end the separated bearings 12-12 and at the top at the'other end the shelf 13 to which may be adjustably secured by means of a bolt 15 the shield lifter 14k- 111 a vertical groove in the plate 7 between the bearings 12, 12 is a vertically operating slide 9 the lower end of which is formed with a backwardly pointed foot 8 projecting under the lay and 6 of the stand? in such position that the upper end of the raising rod 4: bears against the lower side of the foot 8 and the upward motion of the rod at causes the slide 9 to rise. This slide may beheld in position in the groove and yet permitted to move vertically by means of forward slots 10, 10 extending through the slide and headed bolts 11, 11 extending through the slots and into the stand 7*. The top of thisslide 9 engages the underside of the rear part 17 of the knock-oft dagger 16 that is secured, as by the setscrew 18, to the rod 19 that is journaled in the bearings 12,12. The upward motion of the rod 4: will cause the slide 9 to rise and it in turn will lift the rear portion 17 of the dagger and depress the forward end, at the same time causing the rod 19 to rotate in its bearings.

The rod 19 extends along and parallel to thefront face and slightly below the upper face of-the lay, the further end of the rod passing through bearings 23 secured to the lay. A spring 20 may be secured to the rod 19 by means of the collar. 21 and screw 22' and the other end of the'spring may be suitably secured tothe bearing 12, the rod and dan er being so adjusted that the spring will normally tend to keep the rod in such position that the outer end of the dagger Near the fingers 25, 25 preferably made of thin strips of metal are suitably attached to the red as by set screws 24, 24:. The stand 7 the rod- 19 and the fingers 25are so located in relation to the front and upper faces of the lay that the fingers when in their lowered position lie in a recess 26 in the upper face of the lay., These fingers are so adjusted on the rod that when the fingers are fully raised, the forward end of the dagger will be fully depressed, when the fingers are depressed and lie in the recess, the forward end of the dagger will be fully raised, and when the fingers are partly raised the forward end of the dagger will be partly depressed. The dagger, the feeler fingers and the spring are so connected to the rod 19 that when the lay is at the rearward end of its beat, the raising rod 4 pushes the slide to its full upward extent, causing the feeler fingers 25 to be raised to their full extent,

so as to permit the shuttle to pass under the fingers, carrying with it the filling 27. lYhen the lay beats up, the upper end of the raising rod sinks relative to the lay and permits the slide to lower and the rod-l9 to rotate backward under the influence of the spring 20 causing the fingers 25 to swing toward the the lay. If the filling is in position and is unbroken, the fingers will lower until they rest upon the filling which will hold the fingers in this position against the rotating action of the spring. When the fingers are in this position the forward end of the dag- .ger will be partly depressed. If the filling is missing or if it is broken the spring wlll cause the fingers to sink into the recess 26, in which event the forward end of the dagger will be raised to its full extent.

On the breast beam opposite the dagger and the shield lifter, is located the knockoff lever 28 and its attachments. This lever may be pivotally connected to the breast beam as by the bolt 29. The outer end of the lever may be located in contact with the control lever J so that the forward motion of the end 30 of the lever '28 will so actuate the lever J as to shut off the power, apply the brakes and cause the stoppage of the loom. The inner end of the lever is bent as at 31 and carries the knock-01f head with its several partswhich are constructed j as follows The face of the knock-off head may be partially cut away as at 33. Near the lower frontof the face, may be located the crotch 34 adapted to receive the thrust of the 'forward end of the dagger 16. Pivotally attached to the knock-off head in. the modifi cation of my device shown in the drawings, is the shield which consists of the shield face 35 carried by the support 37 which is connected to the head by the pivot 36. An interior cam 38 connected to the inner side of the shield face35 and of the support 37 bears against the face of'the head when the shield is in the lowered position. On the outer side of the support 37 is an exterior cam 39 which is shaped to conform to the curvature of the shield lifter and is. adapted, as the shield lifter progressively comesin contact shield to be lifted'and'revolve on its pivot until it is fully raised and rests against the stop 40 which-is connected to the inner end of the knock-off lever.

When the loom is in regular operation, the operation of the knock-off mechanism is as follows:

WVhen the lay is at the back of its heat, the raising rod actuates the {slide which in turn thrusts the rear end of the dagger upward causing the rod 19 to rotate against the action of the spring 20 and the fingers 25 to be lifted so as to permit the shuttle to pass thereunder carrying the filling 27 As the lay beats up the raising rod sinks and the fingers 25 also sink until they rest upon and are held in a partially raised position by the filling. The forward end of the dagger is thus depressed sufficiently, so that as the lay continues its forward beat, the end of the dagger passes under the face of the knock-off head. If, however, the filling breaks the fingers 25 will, as the lay heats up, sink until they rest in the recess 26 and the forward end of the dagger 16 will be sufliciently elevated so that as the lay continues its upward heat, the dagger will strike the crotch 34 and will move the inner end of the knock-off leverfbackward, causing the outer end 30 to 'move forward which in turn will actuate the control levers of the loom bringing the loom to an 7 immediate stop.

During the above operation, the shield 35 is in its raised position resting against the stop 40. Thejar of the striking of the dagger against the knock-off lever will cause the shield to be thrown forward so that the cam 39 rests upon the shield lifter 14. As the lay moves back from the breast beam the shield will'be lowered into a position in front of the face of the knock-ofi' head. On

of the dagger will strike the lower part of' the shield and will be deflected under the shield, and will pass under the knock-off head. Meanwhile, however, the end of the shield lifter 14 will engage the cam 39 which rides up the curved portion of the shield lifter thereby causing the shield to rotate on its pivot and be lifted and thrown back against its support 40 where it remains during the normal operation of the loom. Upon the next forward beat of the lay, the dagger, now that the shield has been removed, will strike the crotch 34 unless the filling is in position and intact so as to cause the fingers to remain partially lifted and the end of the dagger therefore partly depressed so as to cause the same to pass under the knock-off head. This shield is of advantage whenever it is necessary to move the lay toward the breast beam when no filling is in position under the fingers and when it is not desired that the loom should be stopped, as in the absence of a deflecting shield it would be necessary under the conditions just mentioned to depress the dagger by hand orin some other similar manner.

I have illustrated and described what I consider a preferred embodiment of my invention, but it is obvious that my invention may be embodied in apparatus differing in arrangement and detail from the particular embodiment in question, and I therefore do not intend to limit myself to the details here set forth.

WVhat I claim is set forth claims:

1. In an automatic loom stopping mechanism, a lay, feeler fingers adapted to resiliently bear against a filler as the lay beatsup, a dagger carried by said lay and adapted to be elevated under the control of said feeler fingers when said fingers are released by the breaking of said filler, abreast beam, a knock-off lever attached to the upper face of the said breast beam and having connections whereby it is adapted to control the clutch of said loom, said knock-off lever being so positioned as to be interposed in the path of said dagger when the same is elevated and to clear it when the said feeler fingers are bearing on a filler, a shield lifter forwardly projecting from the lay and an inclined shield pivotally attached to said knock-off mechanism and adapted to receive the thrust of said dagger, said shield havin a cam adapted to be engaged by the sai shield lifter and to cause the shield to be raised as the lay heats up.

2. An automatic loom stopping device comprising a raising rod, the lower end of which is pivotally connected with the frame of the loom and which is so adjusted relatively to the lay that the upper end of the rod rises relatively to the lay as the lay approaches its backward position and sinks as the lay approaches its forward position, a vertically movable slide carried by the front face of the lay adapted to be actuated by the upper end of the raising rod, a dagger located near the top of the front face of the in the following lay and carried on a spring controlled rotatable rod, mounted on the lay, the rear end of said dagger being actuated by the upper end of the vertical slide, feeler fingers carried by said rod, said dagger, spring, and fingers being so adjusted relative to the rod that when the fingers are raised the forward end of the dagger will be depressed, a recess in the lay adapted to receive the fingers when depressed, a shield lifter forwardly projecting from the upperportion of the front face of the lay, a knock-off mechanism adapted to be attached to the upper portion of the breast beam of the loom, said knockofi mechanism comprising a head located opposite the forward end of the dagger and in the path of travel of said dagger when in its raised position, an inclined shield 3. In an automatic'loom stopping device,

a dagger projecting forwardly from the lay, feeler fingers adapted to rest on a filler as the lay beats up, connections between the said fingers and the said dagger, said connections being adapted to cause the said daggerto be elevated when the feeler fingers are depressed by the breaking of a filler, a

knock-off mechanism adapted'to be operated by the sa1d dagger when the same is depressed, said knock-off mechanism including a head adapted to receive the impact of said dagger, a shield lifter forwardly projecting from the said lay and an inclined shield pivotally attached to the said head and positioned to receive the thrust of said dagger, said shield having a cam adapted to be engaged by the shield lifter and to cause the shield to be raised as the lay heats up.

4. In a loom stopping device which in- 1 cludes a dagger mounted on the lay normally depressed and adapted to be elevated when a filler breaks, a head adapted to control the power control mechanism and positioned to receive the impact of said dagger when the same is elevated and to be clear of said dagger when the same is depressed, a shield lifter forwardly projecting from the lay, an inclined shield pivotally attached to the said head and adapted to extend in front thereof and to receive the thrust of said dagger, said shield having a cam adapted to be engaged by the shield lifter and to cause the shield to be raised as the same is struck by the shield lifter. I

5.'An automatic loom stopping device comprising a dagger pivotally carried on the forward face of the lay near its top, means connected with the frame of the loom and movable relative to the lay for causing the forward end of the dagger to be de pressed and simultaneously causing feeler fingers pivotally carried on the lay to be raised as the lay is in the rearward portion of its beat, means connected with said dagger and said fingers for causing the fingers during the forwardportion ofthe beat of the lay to be so depressed unless said fingers be maintained in a partly raised position by the filling, and the dagger end so elevated as to cause the dagger to impinge against and actuate a knock-off mechanism carried by the frame, a pivotally mounted shield adapted at one time to extendin the path of the dagger and to receive and divert the blow of the dagger and at another time to be raised to a position out of the path of the dagger.

6. In an automatic loom stopping device a dagger located near the upper part of the forward face of the lay mounted on a rod carried by said lay, feeler fingers connected -with said rod in such manner that when the fingers are elevated theforward end of the daggeris depressed, means operatedby the motion of the lay to elevate the fingers and correspondingly depress the forward end of the dagger while the lay is in its rearward position and means connected with said. rod to permit the fingers to tend to sink and the forward end of the dagger to rise as the lay assumes its forward position, knock-off mechanism comprising a lever pivotally attached to the frame, one end of which lever carries a knock-off head, a

shield pivotally attached to said head adapted at one time to extend in front of said head and receive and divert the blow of the dagger and at another time to be raised into position out of the path of the dagger, and .the other end of which knockoff lever is adapted to engage with and automatically actuate the stopping mechanism of the loom.

7 An automatic loom stopping device pressed and simultaneously causing feeler fingers pivotally connected to the lay to be raised as the lay is in its rearward beat, means connected with said dagger and said fingers for causingtheqfingers during the forward beat of the lay to be so depressed,

unless the fingers are maintained in a partly raised position by the filling, and the dagger end so elevated as to cause the dagger to impinge against and actuate a knock-off mechanism carried by the frame, a shield lifter projecting from the top of the front face of, the lay, and a knock-oifmechanism pivotally connected to the breast beam, one end of which is adapted to-engage and automatically actuate the loom stopping mechanism, and the other end ofwhich said lever carries a-knock-off head, pivotally attached -to which is a shield adapted to extend in front of said head, and to engage and divert a dagger, said shieldhavinga cam adapted to be engaged by the shield lifter the forward motion of which causes the shield to .be lifted into aposition out ofthe-path of travel of said dagger.

In testimony whereof, I have signed this specification.

' HARVEY 0. BROWN. 

